| Apartment 101 Simmonds House, Clayponds Lane, Brentford | Leasehold | 39 m² | £200,000 (2011) |
| Apartment 102, Simmonds House, Clayponds Lane, Brentford | Leasehold | 46 m² | £340,000 (2017) |
| Apartment 103, Simmonds House, Clayponds Lane, Brentford | Leasehold | 91 m² | £360,000 (2011) |
| Apartment 104 Simmonds House, Clayponds Lane, Brentford | - | 63 m² | - |
| Apartment 105 Simmonds House, Clayponds Lane, Brentford | Leasehold | 69 m² | £465,000 (2017) |
| Apartment 106, Simmonds House, Clayponds Lane, Brentford | Leasehold | 44 m² | £230,000 (2011) |
| Apartment 107, Simmonds House, Clayponds Lane, Brentford | Leasehold | 68 m² | £460,000 (2016) |
| Apartment 108, Simmonds House, Clayponds Lane, Brentford | Leasehold | 38 m² | £300,000 (2024) |
| Apartment 109, Simmonds House, Clayponds Lane, Brentford | Leasehold | 42 m² | £211,200 (2011) |
| Apartment 110, Simmonds House, Clayponds Lane, Brentford | Leasehold | 90 m² | £295,000 (2011) |
| Apartment 111, Simmonds House, Clayponds Lane, Brentford | Leasehold | 45 m² | £350,000 (2016) |
| Apartment 201, Simmonds House, Clayponds Lane, Brentford | Leasehold | 38 m² | £220,000 (2011) |
| Apartment 202, Simmonds House, Clayponds Lane, Brentford | Leasehold | 38 m² | £220,000 (2011) |
| Apartment 203, Simmonds House, Clayponds Lane, Brentford | Leasehold | 39 m² | £610,000 (2022) |
| Apartment 205, Simmonds House, Clayponds Lane, Brentford | Leasehold | 66 m² | £289,000 (2012) |
| Apartment 206, Simmonds House, Clayponds Lane, Brentford | Leasehold | 44 m² | £300,000 (2022) |
| Apartment 207, Simmonds House, Clayponds Lane, Brentford | Leasehold | 65 m² | £470,000 (2017) |
| Apartment 208, Simmonds House, Clayponds Lane, Brentford | Leasehold | 41 m² | £215,000 (2011) |
| Apartment 209, Simmonds House, Clayponds Lane, Brentford | Leasehold | 43 m² | £275,000 (2024) |
| Apartment 210, Simmonds House, Clayponds Lane, Brentford | Leasehold | 81 m² | £450,000 (2025) |
| Apartment 211, Simmonds House, Clayponds Lane, Brentford | Leasehold | 48 m² | £330,000 (2018) |
| Apartment 301 Simmonds House, Clayponds Lane, Brentford | - | 39 m² | - |
| Apartment 302, Simmonds House, Clayponds Lane, Brentford | Leasehold | 40 m² | £279,950 (2014) |
| Apartment 303, Simmonds House, Clayponds Lane, Brentford | Leasehold | 93 m² | £360,000 (2011) |
| Apartment 305, Simmonds House, Clayponds Lane, Brentford | Leasehold | 78 m² | £304,000 (2012) |
| Apartment 306 Simmonds House, Clayponds Lane, Brentford | Leasehold | 66 m² | £450,000 (2015) |
| Apartment 307, Simmonds House, Clayponds Lane, Brentford | Leasehold | 65 m² | £395,000 (2024) |
| Apartment 308 Simmonds House, Clayponds Lane, Brentford | - | 67 m² | - |
| Apartment 309, Simmonds House, Clayponds Lane, Brentford | Leasehold | 80 m² | £440,000 (2026) |
| Apartment 310, Simmonds House, Clayponds Lane, Brentford | Leasehold | 40 m² | £335,000 (2015) |
| Apartment 401, Simmonds House, Clayponds Lane, Brentford | Leasehold | 43 m² | £226,000 (2011) |
| Apartment 402, Simmonds House, Clayponds Lane, Brentford | Leasehold | 44 m² | £322,000 (2022) |
| Apartment 403 Simmonds House, Clayponds Lane, Brentford | Leasehold | 28 m² | £350,000 (2011) |
| Apartment 405, Simmonds House, Clayponds Lane, Brentford | Leasehold | 68 m² | £295,000 (2011) |
| Apartment 406, Simmonds House, Clayponds Lane, Brentford | Leasehold | 66 m² | £300,000 (2011) |
| Apartment 407, Simmonds House, Clayponds Lane, Brentford | Leasehold | 68 m² | £414,950 (2016) |
| Apartment 408, Simmonds House, Clayponds Lane, Brentford | Leasehold | 65 m² | £295,000 (2012) |
| Apartment 409 Simmonds House, Clayponds Lane, Brentford | Leasehold | 79 m² | £320,000 (2011) |
| Apartment 410, Simmonds House, Clayponds Lane, Brentford | Leasehold | 42 m² | £320,000 (2015) |
| Apartment 501, Simmonds House, Clayponds Lane, Brentford | - | 40 m² | - |
| Apartment 502, Simmonds House, Clayponds Lane, Brentford | Leasehold | 40 m² | £307,000 (2022) |
| Apartment 503, Simmonds House, Clayponds Lane, Brentford | Leasehold | 47 m² | £250,000 (2011) |
| Apartment 504 Simmonds House, Clayponds Lane, Brentford | - | 73 m² | - |
| Apartment 505, Simmonds House, Clayponds Lane, Brentford | Leasehold | 71 m² | £421,000 (2025) |
| Apartment 506, Simmonds House, Clayponds Lane, Brentford | Leasehold | 42 m² | £230,000 (2011) |
| Apartment 507, Simmonds House, Clayponds Lane, Brentford | Leasehold | 42 m² | £230,000 (2011) |
| Apartment 508 Simmonds House, Clayponds Lane, Brentford | - | 80 m² | - |
| Apartment 509 Simmonds House, Clayponds Lane, Brentford | Leasehold | 43 m² | £222,000 (2011) |
| Apartment 601, Simmonds House, Clayponds Lane, Brentford | - | 34 m² | - |
| Apartment 602, Simmonds House, Clayponds Lane, Brentford | Leasehold | 38 m² | £302,500 (2024) |
| Apartment 603, Simmonds House, Clayponds Lane, Brentford | Leasehold | 45 m² | £335,000 (2024) |
| Apartment 604, Simmonds House, Clayponds Lane, Brentford | Leasehold | 81 m² | £332,000 (2011) |
| Apartment 605, Simmonds House, Clayponds Lane, Brentford | Leasehold | 69 m² | £320,000 (2011) |
| Apartment 606, Simmonds House, Clayponds Lane, Brentford | Leasehold | 41 m² | £235,000 (2011) |
| Apartment 607, Simmonds House, Clayponds Lane, Brentford | Leasehold | 47 m² | £290,000 (2025) |
| Apartment 608 Simmonds House, Clayponds Lane, Brentford | Leasehold | 80 m² | £315,000 (2011) |
| Apartment 609 Simmonds House, Clayponds Lane, Brentford | Leasehold | 42 m² | £280,000 (2019) |
| Apartment G01 Simmonds House, Clayponds Lane, Brentford | Leasehold | 70 m² | £451,779 (2022) |
| Apartment G02 Simmonds House, Clayponds Lane, Brentford | Leasehold | 28 m² | £499,999 (2015) |
| Apartment G04 Simmonds House, Clayponds Lane, Brentford | - | 69 m² | - |
| Apartment G05 Simmonds House, Clayponds Lane, Brentford | Leasehold | 45 m² | £219,000 (2011) |
| Apartment G06, Simmonds House, Clayponds Lane, Brentford | Leasehold | 70 m² | £420,000 (2018) |
| Apartment G07 Simmonds House, Clayponds Lane, Brentford | Leasehold | 41 m² | £302,500 (2020) |
| Apartment G08, Simmonds House, Clayponds Lane, Brentford | Leasehold | 43 m² | £210,000 (2011) |
| Apartment G09, Simmonds House, Clayponds Lane, Brentford | Leasehold | 84 m² | £295,000 (2011) |
| Apartment G10, Simmonds House, Clayponds Lane, Brentford | Leasehold | 42 m² | £235,000 (2011) |